Results 131 to 140 of about 723 (178)

Advances in Spaceborne GNSS-Reflectometry

, 2021
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Towards Tsunami Early-Warning with Distributed Acoustic Sensing: Expected Seafloor Strains Induced by Tsunamis. [PDF]

Pure Appl Geophys
Becerril C, Sladen A, Ampuero JP, Preciado-Garbayo J, Gonzalez-Herraez M, Kutschera F, Gabriel AA, Bouchette F.   +7 more
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Temporally Correlated Deep Learning-Based Horizontal Wind-Speed Prediction. [PDF]

Sensors (Basel)
Li L, Escribano-Macias J, Zhang M, Fu S, Huang M, Yang X, Zhao T, Feng Y, Elhajj M, Majumdar A, Angeloudis P, Ochieng W.   +11 more
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On the Spatial Resolution of GNSS Reflectometry

IEEE Geoscience and Remote Sensing Letters, 2016
A method for defining the spatial resolution of a Global Navigation Satellite System reflectometry delay–Doppler map (DDM) and of any derived geophysical product is proposed. An effective spatial resolution is derived as a function of measurement geometry and delay–Doppler (DD) interval, and as a more appropriate representation of resolution than the ...
Maria Paola Clarizia, Christopher S. Ruf
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The GNSS Reflectometry response to the ocean surface

2016 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 2016
We investigate the Global Navigation Satellite System Reflectometry (GNSS-R) measurements collected by the Space GNSS Receiver-Remote Sensing Instrument (SGR-ReSI) on board the TechDemoSat-1 (TDS-1) satellite. The sensitivity of the SGR-ReSI measurements to the ocean surface winds and waves are characterized.
Paul S. Chang, Zorana Jelenak, Seubson Soisuvarn, Faozi Said   +3 more
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FORMOSAT-7R Mission for GNSS Reflectometry

IGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
The omnipresence Global Navigation Satellite System (GNSS) signals have not only provided high accuracy navigation but also facilitated many remote sensing missions. In a GNSS reflectometry (GNSS-R) mission, the reflected signals are processed to form delay Doppler maps (DDMs) so that the properties including roughness, ocean wind speed, and soil ...
Jyh-Ching Juang, Yung-Fu Tsai, Chen-Tsung Lin   +2 more
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GNSS reflectometry for remote sensing of soil moisture

2015 IEEE 1st International Forum on Research and Technologies for Society and Industry Leveraging a better tomorrow (RTSI), 2015
Global Navigation Satellite System Reflectometry (GNSS-R) is an emerging technique for remote sensing of soil surfaces. In this work, the data collected by a GNSS receiver prototype mounted on a small aircraft are analyzed to retrieve soil moisture. Based on GNSS-R bi-static configuration, direct and reflected GPS signals were measured by a right hand (
JIA, YAN, SAVI, Patrizia, Pei, Y., NOTARPIETRO, RICCARDO   +3 more
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Theory of GNSS Reflectometry

2013
The GNSS-reflectometry works as a bi-static radar system in which the transmitter and the receiver are separated by a significant distance. This Chapter compiles different theoretical aspects to understand the GNSS signals after their reflection of the Earth surface, including multi-static system, specular and diffuse scattering, delay and doppler ...
Shuanggen Jin, Estel Cardellach, Feiqin Xie   +2 more
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Expanding the Scope of GNSS Reflectometry

2023
Another contribution is the exploration of new modes of GNSS-R, notably a backscattering mode. This includes experiments with new use cases using raw TDS-1 data and the introduction of a backscatter reflection point prediction tool. A new phenomenon termed ""Specular Point Intrusions"", which will have implications for the implementation of the method ...
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